M37 tool question

[tedtsr54]

Hello all
I'm new here and thx for having me
Brought my first M37 home yesterday and getting ready to start work
My question is.....
anyone know the size of the nut/bolt head size on the front
of the crank pulley?
I'd like to bar it over to check it and I dont wanna booger it
up in case I do a rebuild later Looks like 1 3/4 to me
but dont see as good as i used to

Thx all!

 

[kendelrio]

Hello all
I'm new here and thx for having me
Brought my first M37 home yesterday and getting ready to start work
My question is.....
anyone know the size of the nut/bolt head size on the front
of the crank pulley?
I'd like to bar it over to check it and I dont wanna booger it
up in case I do a rebuild later Looks like 1 3/4 to me
but dont see as good as i used to

Thx all!

Honestly it's just as easy to turn over by hand. Here's a video I made after I pulled my head to check my valves to see which ones are stuck.

You should be able to take the fan and spin it in a clockwise direction as you're facing the vehicle.

Checking pistons and valves on the '54 M37

youtube.com

If it won't spin, odds are you have a piston frozen. Put a healthy amount of Marvel Mystery oil in the plug holes and let it sit for a couple of days and it should free up.

 

[tedtsr54]

Honestly it's just as easy to turn over by hand. Here's a video I made after I pulled my head to check my valves to see which ones are stuck.

You should be able to take the fan and spin it in a clockwise direction as you're facing the vehicle.

Checking pistons and valves on the '54 M37

youtube.com

If it won't spin, odds are you have a piston frozen. Put a healthy amount of Marvel Mystery oil in the plug holes and let it sit for a couple of days and it should free up.

ya gotta remove plugs...they're soaking....dont wanna break them off.....shroud and fan are off....I'll replace and give a spin....thx

 

[kendelrio]

ya gotta remove plugs...they're soaking....dont wanna break them off.....shroud and fan are off....I'll replace and give a spin....thx

No worries bud. Check your inbox. Gonna send you my number if you have any questions.

 

[Mullaney]

Hello all
I'm new here and thx for having me
Brought my first M37 home yesterday and getting ready to start work
My question is.....
anyone know the size of the nut/bolt head size on the front
of the crank pulley?
I'd like to bar it over to check it and I dont wanna booger it
up in case I do a rebuild later Looks like 1 3/4 to me
but dont see as good as i used to

Thx all!

.
Welcome to the Outfit! I see that you got a response from @kendelrio as he is working to rebuild his M37. Heck of a nice guy and always more than willing to help.

Another thing you can find here are the TM's (Technical Manuals) for your truck. They are a great source for troubleshooting and are freely available. Link below:

TM9-8031-2 Power Train Body and Frame Manual for the M37

TM9-8031-2 Power Train Body and Frame Manual for the M37/M43/M42 etc series of trucks. This post is to replace the link to a manual in this thread that I posted back in 2015. Back then I wasn't able to upload it to the forum for some reason, so I just included a link in the hope someone else...

www.steelsoldiers.com

TM 9-2320-212-10 M37 Series Operator Manual

TM 9-2320-212-10 M37 Operator Manual.

www.steelsoldiers.com

TM's for the M37

Listed below are a number of the TM's for the M37 series trucks. To save them to your computer, right click, select "save as". TM 9-2320-212-20 TM 9-1840A (TO 19-75B-15) TM 9-2520-232-35 TB 9-2855-45 (TO 36Y17-5-1-7) TM 9-8031-2 M37 Power Train-Body-Frame.pdf TM...

www.steelsoldiers.com

Post up a few pictures of your New-To-You truck too!
We all love seeing new green iron - running or not.
Again, welcome to the group

 

[tedtsr54]

Thx guys!!

 

[tedtsr54]

hi guys thx....tried to download one of the manuals. twice...didn't get it

 

[Mullaney]

hi guys thx....tried to download one of the manuals. twice...didn't get it

.
PC, Mac, or Mac phone or Android Phone download?

Some of the links here forward you to a GoogleDocs site in some cases.
Don't hesitate to copy paste a link that you are trying to download - and we will go test. I personally clicked on several in the post I did earlier and they worked. Willing to help for sure . . .

 

[tedtsr54]

hi folks...well she does'nt turn over by hand.....next step is socket and breaker bar......also....if anyone is looking for vintage top rad hose.....i found mine at summit racing pt # dac81411.....flexible 2 in

 

[kendelrio]

hi folks...well she does'nt turn over by hand.....next step is socket and breaker bar......also....if anyone is looking for vintage top rad hose.....i found mine at summit racing pt # dac81411.....flexible 2 in

Before you breaker bar it, personally I would drop some mystery oil in the plug holes and let it sit. Force is a good way to score your cylinders etc.

 

[tedtsr54]

Before you breaker bar it, personally I would drop some mystery oil in the plug holes and let it sit. Force is a good way to score your cylinders etc.

did that bud... sat 3 days.... wont budge

 

[Mullaney]

did that bud... sat 3 days.... wont budge

.
Do it again...
It's been sitting for a long time.

No need to hurry it now.

I know. We all want the new toy to work RIGHT NOW, but pushing or rushing it now might cost more than some more penetrating oil or Marvel Mystery Oil.

 

[tedtsr54]

.
Do it again...
It's been sitting for a long time.

No need to hurry it now.

I know. We all want the new toy to work RIGHT NOW, but pushing or rushing it now might cost more than some more penetrating oil or Marvel Mystery Oil.

lol...no worries...no hurry...too cold out anyway...just want to know where i stand...thx

 

[kendelrio]

There is an inspection panel on the passenger side that will let you see when the valve should go down. If they're frozen in the down position, that could be the cause of the stick. If so, pull the head and using either Marvel or transmission fluid, soak the valves.

The panel releases with two wing bolts.

 

[chucky]

Ive seen folks fill all the cylinders up with diesel fuel for a week or 2 and usally always did the trick